Abstract:
본 발명은 산화 그래핀의 환원처리를 통한 그래핀 박막 및 이를 이용한 광전소자의 제조방법에 관한 것으로서, 본 발명의 그래핀 박막의 제조방법은 (a) 산화 그래핀을 준비하는 단계, (b) 상기 산화 그래핀을 설포닐 히드라지드 계열 환원제로 환원시켜 그래핀을 제조하는 단계, (c) 상기 그래핀을 유기용매에 분산시켜 그래핀 분산액을 제조하는 단계 및 (d) 상기 그래핀 분산액을 이용하여 그래핀 박막을 제조하는 단계를 포함하는 것이고, 상기 설포닐 히드라지드 계열 환원제는 명세서의 화학식 1의 설포닐 히드라지드 치환기를 갖는 화합물인 것일 수 있고, A가 명세서의 화학식 2 중 어느 하나인 것일 수 있다.
Abstract:
The method provides an optical information storage media with reversible information saving function so that we can write, store, erase and rewrite information on the media. The method comprises the steps of: (A) making a thin film by dissolving the liquid crystalline polymer into an organic solvent; (B) heating the solvent to the melting temperature of the crystalline polymer, cooling the solvent below the glass transition temperature, and use the fixed thin film as storage layer; (C) melting the liquid crystalline polymer by irradiation of polarized ultraviolet through a photo mask; (D) storing the information by cooling the polymer.
Abstract:
PURPOSE: A graphene thin film based on a sulfonyl hydrazide-based reducing agent and a method for manufacturing a photoelectric device using the same are provided to adjust the thickness of a reduced graphene thin film. CONSTITUTION: A graphene thin film based on a sulfonyl hydrazide-based reducing agent includes the following: oxidation graphene is prepared; the oxidation graphene is reduced based on a sulfonyl hydrazide-based reducing agent to manufacture graphene; the graphene is dispersed in an organic solvent to manufacture a graphene dispersed solution; and a graphene thin film is manufactured based on the graphene dispersed solution. The sulfonyl hydrazide-based reducing agent includes a sulfonyl hydrazide substituted group represented by chemical formula 1.